Mercurial > cpython-lru_cache-weakref
view Lib/test/buffer_tests.py @ 87690:66c1c9f32567 default tip
Add use_weakref option to functools.lru_cache
The use_weakref option makes lru_cache create weak references to the function
arguments when creating the cache key, which prevents them from staying in the
memory forever even after all other references to them are gone.
This is a proof of concept for http://bugs.python.org/issue19859
| author | Radomir Dopieralski <devel@sheep.art.pl> |
|---|---|
| date | Tue, 03 Dec 2013 16:02:48 +0100 |
| parents | 82b58807f481 |
| children |
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# Tests that work for both bytes and buffer objects. # See PEP 3137. import struct import sys class MixinBytesBufferCommonTests(object): """Tests that work for both bytes and buffer objects. See PEP 3137. """ def marshal(self, x): """Convert x into the appropriate type for these tests.""" raise RuntimeError('test class must provide a marshal method') def test_islower(self): self.assertFalse(self.marshal(b'').islower()) self.assertTrue(self.marshal(b'a').islower()) self.assertFalse(self.marshal(b'A').islower()) self.assertFalse(self.marshal(b'\n').islower()) self.assertTrue(self.marshal(b'abc').islower()) self.assertFalse(self.marshal(b'aBc').islower()) self.assertTrue(self.marshal(b'abc\n').islower()) self.assertRaises(TypeError, self.marshal(b'abc').islower, 42) def test_isupper(self): self.assertFalse(self.marshal(b'').isupper()) self.assertFalse(self.marshal(b'a').isupper()) self.assertTrue(self.marshal(b'A').isupper()) self.assertFalse(self.marshal(b'\n').isupper()) self.assertTrue(self.marshal(b'ABC').isupper()) self.assertFalse(self.marshal(b'AbC').isupper()) self.assertTrue(self.marshal(b'ABC\n').isupper()) self.assertRaises(TypeError, self.marshal(b'abc').isupper, 42) def test_istitle(self): self.assertFalse(self.marshal(b'').istitle()) self.assertFalse(self.marshal(b'a').istitle()) self.assertTrue(self.marshal(b'A').istitle()) self.assertFalse(self.marshal(b'\n').istitle()) self.assertTrue(self.marshal(b'A Titlecased Line').istitle()) self.assertTrue(self.marshal(b'A\nTitlecased Line').istitle()) self.assertTrue(self.marshal(b'A Titlecased, Line').istitle()) self.assertFalse(self.marshal(b'Not a capitalized String').istitle()) self.assertFalse(self.marshal(b'Not\ta Titlecase String').istitle()) self.assertFalse(self.marshal(b'Not--a Titlecase String').istitle()) self.assertFalse(self.marshal(b'NOT').istitle()) self.assertRaises(TypeError, self.marshal(b'abc').istitle, 42) def test_isspace(self): self.assertFalse(self.marshal(b'').isspace()) self.assertFalse(self.marshal(b'a').isspace()) self.assertTrue(self.marshal(b' ').isspace()) self.assertTrue(self.marshal(b'\t').isspace()) self.assertTrue(self.marshal(b'\r').isspace()) self.assertTrue(self.marshal(b'\n').isspace()) self.assertTrue(self.marshal(b' \t\r\n').isspace()) self.assertFalse(self.marshal(b' \t\r\na').isspace()) self.assertRaises(TypeError, self.marshal(b'abc').isspace, 42) def test_isalpha(self): self.assertFalse(self.marshal(b'').isalpha()) self.assertTrue(self.marshal(b'a').isalpha()) self.assertTrue(self.marshal(b'A').isalpha()) self.assertFalse(self.marshal(b'\n').isalpha()) self.assertTrue(self.marshal(b'abc').isalpha()) self.assertFalse(self.marshal(b'aBc123').isalpha()) self.assertFalse(self.marshal(b'abc\n').isalpha()) self.assertRaises(TypeError, self.marshal(b'abc').isalpha, 42) def test_isalnum(self): self.assertFalse(self.marshal(b'').isalnum()) self.assertTrue(self.marshal(b'a').isalnum()) self.assertTrue(self.marshal(b'A').isalnum()) self.assertFalse(self.marshal(b'\n').isalnum()) self.assertTrue(self.marshal(b'123abc456').isalnum()) self.assertTrue(self.marshal(b'a1b3c').isalnum()) self.assertFalse(self.marshal(b'aBc000 ').isalnum()) self.assertFalse(self.marshal(b'abc\n').isalnum()) self.assertRaises(TypeError, self.marshal(b'abc').isalnum, 42) def test_isdigit(self): self.assertFalse(self.marshal(b'').isdigit()) self.assertFalse(self.marshal(b'a').isdigit()) self.assertTrue(self.marshal(b'0').isdigit()) self.assertTrue(self.marshal(b'0123456789').isdigit()) self.assertFalse(self.marshal(b'0123456789a').isdigit()) self.assertRaises(TypeError, self.marshal(b'abc').isdigit, 42) def test_lower(self): self.assertEqual(b'hello', self.marshal(b'HeLLo').lower()) self.assertEqual(b'hello', self.marshal(b'hello').lower()) self.assertRaises(TypeError, self.marshal(b'hello').lower, 42) def test_upper(self): self.assertEqual(b'HELLO', self.marshal(b'HeLLo').upper()) self.assertEqual(b'HELLO', self.marshal(b'HELLO').upper()) self.assertRaises(TypeError, self.marshal(b'hello').upper, 42) def test_capitalize(self): self.assertEqual(b' hello ', self.marshal(b' hello ').capitalize()) self.assertEqual(b'Hello ', self.marshal(b'Hello ').capitalize()) self.assertEqual(b'Hello ', self.marshal(b'hello ').capitalize()) self.assertEqual(b'Aaaa', self.marshal(b'aaaa').capitalize()) self.assertEqual(b'Aaaa', self.marshal(b'AaAa').capitalize()) self.assertRaises(TypeError, self.marshal(b'hello').capitalize, 42) def test_ljust(self): self.assertEqual(b'abc ', self.marshal(b'abc').ljust(10)) self.assertEqual(b'abc ', self.marshal(b'abc').ljust(6)) self.assertEqual(b'abc', self.marshal(b'abc').ljust(3)) self.assertEqual(b'abc', self.marshal(b'abc').ljust(2)) self.assertEqual(b'abc*******', self.marshal(b'abc').ljust(10, b'*')) self.assertRaises(TypeError, self.marshal(b'abc').ljust) def test_rjust(self): self.assertEqual(b' abc', self.marshal(b'abc').rjust(10)) self.assertEqual(b' abc', self.marshal(b'abc').rjust(6)) self.assertEqual(b'abc', self.marshal(b'abc').rjust(3)) self.assertEqual(b'abc', self.marshal(b'abc').rjust(2)) self.assertEqual(b'*******abc', self.marshal(b'abc').rjust(10, b'*')) self.assertRaises(TypeError, self.marshal(b'abc').rjust) def test_center(self): self.assertEqual(b' abc ', self.marshal(b'abc').center(10)) self.assertEqual(b' abc ', self.marshal(b'abc').center(6)) self.assertEqual(b'abc', self.marshal(b'abc').center(3)) self.assertEqual(b'abc', self.marshal(b'abc').center(2)) self.assertEqual(b'***abc****', self.marshal(b'abc').center(10, b'*')) self.assertRaises(TypeError, self.marshal(b'abc').center) def test_swapcase(self): self.assertEqual(b'hEllO CoMPuTErS', self.marshal(b'HeLLo cOmpUteRs').swapcase()) self.assertRaises(TypeError, self.marshal(b'hello').swapcase, 42) def test_zfill(self): self.assertEqual(b'123', self.marshal(b'123').zfill(2)) self.assertEqual(b'123', self.marshal(b'123').zfill(3)) self.assertEqual(b'0123', self.marshal(b'123').zfill(4)) self.assertEqual(b'+123', self.marshal(b'+123').zfill(3)) self.assertEqual(b'+123', self.marshal(b'+123').zfill(4)) self.assertEqual(b'+0123', self.marshal(b'+123').zfill(5)) self.assertEqual(b'-123', self.marshal(b'-123').zfill(3)) self.assertEqual(b'-123', self.marshal(b'-123').zfill(4)) self.assertEqual(b'-0123', self.marshal(b'-123').zfill(5)) self.assertEqual(b'000', self.marshal(b'').zfill(3)) self.assertEqual(b'34', self.marshal(b'34').zfill(1)) self.assertEqual(b'0034', self.marshal(b'34').zfill(4)) self.assertRaises(TypeError, self.marshal(b'123').zfill) def test_expandtabs(self): self.assertEqual(b'abc\rab def\ng hi', self.marshal(b'abc\rab\tdef\ng\thi').expandtabs()) self.assertEqual(b'abc\rab def\ng hi', self.marshal(b'abc\rab\tdef\ng\thi').expandtabs(8)) self.assertEqual(b'abc\rab def\ng hi', self.marshal(b'abc\rab\tdef\ng\thi').expandtabs(4)) self.assertEqual(b'abc\r\nab def\ng hi', self.marshal(b'abc\r\nab\tdef\ng\thi').expandtabs()) self.assertEqual(b'abc\r\nab def\ng hi', self.marshal(b'abc\r\nab\tdef\ng\thi').expandtabs(8)) self.assertEqual(b'abc\r\nab def\ng hi', self.marshal(b'abc\r\nab\tdef\ng\thi').expandtabs(4)) self.assertEqual(b'abc\r\nab\r\ndef\ng\r\nhi', self.marshal(b'abc\r\nab\r\ndef\ng\r\nhi').expandtabs(4)) # check keyword args self.assertEqual(b'abc\rab def\ng hi', self.marshal(b'abc\rab\tdef\ng\thi').expandtabs(tabsize=8)) self.assertEqual(b'abc\rab def\ng hi', self.marshal(b'abc\rab\tdef\ng\thi').expandtabs(tabsize=4)) self.assertEqual(b' a\n b', self.marshal(b' \ta\n\tb').expandtabs(1)) self.assertRaises(TypeError, self.marshal(b'hello').expandtabs, 42, 42) # This test is only valid when sizeof(int) == sizeof(void*) == 4. if sys.maxsize < (1 << 32) and struct.calcsize('P') == 4: self.assertRaises(OverflowError, self.marshal(b'\ta\n\tb').expandtabs, sys.maxsize) def test_title(self): self.assertEqual(b' Hello ', self.marshal(b' hello ').title()) self.assertEqual(b'Hello ', self.marshal(b'hello ').title()) self.assertEqual(b'Hello ', self.marshal(b'Hello ').title()) self.assertEqual(b'Format This As Title String', self.marshal(b'fOrMaT thIs aS titLe String').title()) self.assertEqual(b'Format,This-As*Title;String', self.marshal(b'fOrMaT,thIs-aS*titLe;String').title()) self.assertEqual(b'Getint', self.marshal(b'getInt').title()) self.assertRaises(TypeError, self.marshal(b'hello').title, 42) def test_splitlines(self): self.assertEqual([b'abc', b'def', b'', b'ghi'], self.marshal(b'abc\ndef\n\rghi').splitlines()) self.assertEqual([b'abc', b'def', b'', b'ghi'], self.marshal(b'abc\ndef\n\r\nghi').splitlines()) self.assertEqual([b'abc', b'def', b'ghi'], self.marshal(b'abc\ndef\r\nghi').splitlines()) self.assertEqual([b'abc', b'def', b'ghi'], self.marshal(b'abc\ndef\r\nghi\n').splitlines()) self.assertEqual([b'abc', b'def', b'ghi', b''], self.marshal(b'abc\ndef\r\nghi\n\r').splitlines()) self.assertEqual([b'', b'abc', b'def', b'ghi', b''], self.marshal(b'\nabc\ndef\r\nghi\n\r').splitlines()) self.assertEqual([b'', b'abc', b'def', b'ghi', b''], self.marshal(b'\nabc\ndef\r\nghi\n\r').splitlines(False)) self.assertEqual([b'\n', b'abc\n', b'def\r\n', b'ghi\n', b'\r'], self.marshal(b'\nabc\ndef\r\nghi\n\r').splitlines(True)) self.assertEqual([b'', b'abc', b'def', b'ghi', b''], self.marshal(b'\nabc\ndef\r\nghi\n\r').splitlines(keepends=False)) self.assertEqual([b'\n', b'abc\n', b'def\r\n', b'ghi\n', b'\r'], self.marshal(b'\nabc\ndef\r\nghi\n\r').splitlines(keepends=True)) self.assertRaises(TypeError, self.marshal(b'abc').splitlines, 42, 42)